BS IEC 61119-4-1997 Digital audio tape (DAT) cassette system - Character pack format《数字音频磁带盒系统 第4部分 字符压缩格式》.pdf

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1、BRITISH STANDARD BS IEC 61119-4:1997 Digital audio tape (DAT) cassette system Part 4: Character pack format ICS 33.160.30BSIEC61119-4:1997 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and

2、comes intoeffect on 15 August 1997 BSI 09-1999 ISBN 0 580 27898 0 Amendments issued since publication Amd. No. Date CommentsBSIEC61119-4:1997 BSI 09-1999 i Contents Page National foreword ii Foreword iii Text of IEC 61119-4 1BSIEC61119-4:1997 ii BSI 09-1999 National foreword This British Standard re

3、produces verbatim IEC 61119-4:1997 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee EPL/100, Audio, video and multimedia systems and equipment, to Subcommittee EPL/100/2, Recording, which has the responsibility to: aid enquir

4、ers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. This standard is part of a

5、series of British Standards implementing the IEC1119 series, the other parts of which have mostly been published as ENs by the European Committee for Electrotechnical Standardization and implemented in the BS EN 61119 series. IEC 1119 includes the following Parts: Part 1: Dimensions and characterist

6、ics (EN 61119-1:1994); Part 2: DAT calibration tape (EN 61119-2:1994); Part 3: DAT tape properties (EN 61119-3:1994); Part 4: Character pack format; Part 5: DAT for professional use (EN 61119-5:1995); Part 6: Serial copy management (EN 61119-6:1994); Part 7: DAT logo. A list of organizations represe

7、nted on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the othe

8、r, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”,

9、 or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer i

10、mmunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theIEC title page, pages ii to iv, pages 1 to 18 and abackcover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be i

11、ndicated in the amendment table on the inside front cover.BSIEC61119-4:1997 ii BSI 09-1999 Contents Page Foreword iii 1 Scope 1 2 References 1 3 Interface equipment 1 4 Characters 1 5 Explanation of terms 2 5.1 Text character pack 2 5.2 TOC time information 2 5.3 TOC character information 2 5.4 TOC

12、character pack 2 5.5 FMT 2 5.6 Text 2 5.7 Sort 2 5.8 Real time recording 2 5.9 Concentrated recording 2 5.10 Volume 2 6 Character pack format 3 6.1 TOC character pack format 3 6.2 Text character pack format 3 7 Definition of the data block 4 7.1 Address 4 7.2 PNO (program number) 4 7.3 Sort 4 7.4 CC

13、1, CC2 (character control ID) 5 7.5 Text pack length 5 7.6 Character 5 7.7 FMT 6 8 Application rules for the character pack format, pre-recorded tape 7 8.1 Writing rule of characters 7 8.2 Writing position of pack in sub data area 7 8.3 Writing rule of TOC and text characters 7 8.4 Details of TOC pa

14、ck recording 7 8.5 Details of text character pack writing (for pre-recorded tape) 9 9 Application rule of character pack format (for own-recorded tape) 13 9.1 Writing rule of characters 13 9.2 Writing rule when combining with Subcode recording 13 9.3 Writing rule of FMT (for own-recorded tape) 13 9.

15、4 Details of TOC pack recording (for own-recorded tape) 13 9.5 The details of text character pack recording (for own-recorded tape) 16 Figure 1 Configuration of characters (C0, C1, GL, GR) FMT=00h-02h 5 Figure 2 The content of C0 and GL at FMT = 00h02h 6BSIEC61119-4:1997 BSI 09-1999 iii Foreword 1)

16、The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electri

17、cal and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, gove

18、rnmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisi

19、ons or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for i

20、nternational use and are published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IECInternational Standards transparently to the maximu

21、m extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for a

22、ny equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. The main ta

23、sk of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical report of one of the following types: type 1, when the required support cannot be obtained for the publication of an International Stan

24、dard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future but no immediate possibility of an agreement on an International Standard; type 3, when a technical committee has collected data of a different kind from th

25、at which is normally published as an International Standard, for example “state of the art”. Technical reports of types 1 and 2 are subject to review within three years of publication to decide whether they can be transformed into International Standards. Technical reports of type 3 do not necessari

26、ly have to be reviewed until the data they provide are considered to be no longer valid or useful. IEC 61119-4, which is a technical report of type 3, has been prepared by subcommittee 100B: Recording, of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of thi

27、s technical report is based on the following documents: Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. IEC 61119 consists of the following parts, under the general title Digital audio tape (DAT) cassette sys

28、tems. IEC 61119-1: Part 1: Dimensions and characteristics IEC 61119-2: Part 2: DAT calibration tape IEC 61119-3: Part 3: DAT tape properties IEC 61119-4: Part 4: Character pack format IEC 61119-5: Part 5: DAT for professional use IEC 61119-6: Part 6: Serial copy management system IEC 61119-7: Part 7

29、: DAT logo. CDV Report on voting 100B(Secr)158 100B/171/RVCiv blankBSIEC61119-4:1997 BSI 09-1999 1 1 Scope This publication applies to the Pack information of the Subcode in the Sub data part of the DAT system. This publication describes how to use the newly defined Pack item=1001 (Character) and de

30、scribes the expansion procedure of Pack item=0100 (TOC) out of many Packs which are defined for audio use (ID=0000) of the Sub ID. The purpose of this publication is to establish the writing and recording procedures, and to preserve the interchangeability of character information (called Characters

31、hereafter) when used in the Subcode of DAT systems. The standard also includes the operation rules. 2 References At the time of publication, the editions indicated were valid. All documents are subject to revision and parties to agreements based on this part of IEC61119 are encouraged to investigate

32、 the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 61119-1:1992, DAT cassette system Part1:Dimensions and characteristics. IEC 61119-2:1991, DAT cassette system Pa

33、rt2:DAT calibration tape. IEC 61119-3:1992, DAT cassette system Part3:DAT tape properties. IEC 61119-5:1993, DAT cassette system Part5:DAT for professional use. IEC 61119-6:1992, DAT cassette system Part6:Serial copy management system. IEC 61119-7:1995, DAT cassette system Part7:DAT logo application

34、 rule. 3 Interface equipment Interface equipment is indispensable for full application of the character information Characters packs. This publication however does not cover the standardization of interface equipment, based on the following considerations: 3.1 The purpose of this publication is to d

35、efine how the character information is to be recorded and reproduced, but not how images, graphics or patterns are presented on interface equipment. 3.2 There are no restrictions with respect to output equipment. 3.3 There are no restrictions with respect to input equipment. 3.4 It is possible that

36、the DAT main device and the interface equipment is separate. The definition of this interface is beyond the scope of this publication and must be handled in the main DAT standard, when necessary. 3.5 In this publication, we prescribe the minimum control code needed to express the text images which a

37、re made up of the Character lines. If this control code cannot be followed perfectly due to the restrictions of the output equipment, it is allowed when indicated. 4 Characters The amount of character information including each countrys special characters and signs, is enormous, even if graphic info

38、rmation is not taken into account. In this standard a format code (FMT) consisting of8bits is defined to deal with this diversity. However, the 8 bits code is not intended to define different sets of Character formats unless really necessary. Format FMT=00h, is the basic Characters set, defining fig

39、ures and alphabets etc., to give a fundamental interchangeability. All DAT equipment which has the Characters function shall have the Characters playback function and it is recommended that it also has the Characters record function. Taking into account that this standard will be used worldwide, it

40、is expected that in the main format FMT=00h will be used in order to avoid unnecessary Character sets.BSIEC61119-4:1997 2 BSI 09-1999 5 Explanation of terms In this clause all new terms which are used in this publication are explained. 5.1 Text character pack The text character pack is defined by Pa

41、ck item=1001 and combinations of these packs are compiled to make text. 5.2 TOC time information TOC time information expresses the absolute time using manual TOC packs. 5.3 TOC character information TOC character information is text information made of TOC character pack data. The TOC character pac

42、k is recorded after the TOC time information. 5.4 TOC character pack For the TOC character pack the pack item = 0100. The TOC pack can record the time information of the program as TOC data as already defined. But in this standard, this TOC pack will be expanded: information, equivalent to the text

43、character pack, can be recorded, being the text of each program as a part of TOC. This TOC pack for text is called “TOC Character Pack”. 5.5 FMT FMT (format) indicates the kind of character set. For example, FMT=00H is a basic character set in accordance with the ASCII code and FMT=02h defines the J

44、IS Kanji character set. 5.6 Text Text means the sentence comprising combinations of characters using text character packs and TOC character packs. 5.7 Sort Sort defines the type of character information or attribution. For example, Sort=06h gives the artists name and 07h gives the composers name. 00

45、h04h is intended for general use (excluding the above). 5.8 Real time recording Recorded at the same time as the main data. Character sequences which are to be recorded with the main data at the same time, and are to be displayed together with main data playback, must be recorded under REAL TIME REC

46、ORDING MODE. For example, this character information may correspond to explanations and lyrics of the music, which are displayed when the music is reproduced. This writing/reading must be synchronous to the main data recording/playback. 5.9 Concentrated recording In this mode the text is recorded co

47、ncentratively at a certain position on the tape. The effective coverage of text recorded concentratively is defined by PNO in the Pack. This mode is used for text which does not require time indications, for example, all of the tapes explanations. Of course, the text which is constructed from TOC ch

48、aracter pack is written with concentrated recording. 5.10 Volume The effective coverage of a text will, usually, be either each program unit or the whole tape. However it is more convenient to define the effective coverage of the text, volume by volume recognizing that the whole tape consists of a p

49、lurality of programs. The existence of plural volumes on one tape is called MULTI-VOLUME.BSIEC61119-4:1997 BSI 09-1999 3 6 Character pack format 6.1 TOC character pack format 6.1.1 TOC character pack (ADR=0000) 6.1.2 TOC character pack (ADRs0000) 6.2 Text character pack format 6.2.1 Text character pack (ADR=0000) B7 B6 B5 B4 B3 B2 B! B0 PC1 Pack item 0 PNO1 0 1 0 0 PC2 PNO2 PNO3 PC3 Point Address 1 1 0 1 0 0 0 0 PC4 FMT PC5 0 0 Sort PC6 Text pack length (MSB) PC7 Text pack length (MSB) PC8 Pack parity B7 B6 B5 B4 B3 B2 B! B0 PC1 P